docs: def admin_url(inst):
      """
      :param inst: An Model Instance
      :return: the admin URL for the instance. Permissions aren't checked.
      """
      if inst:
          t = Template("""{% load admin_urls %}{% url opts|admin_urlname:'change' inst.pk %}""")
          return t.render(Context({ 'inst': inst, 'opts': inst._meta}))
      return ""